On March 13, 2018, an ISS
reboost was performed using
Progress
MS-08 thrusters. This reboost was to set up for
Soyuz
MS-08 launch planned on March 21, 2018. The engines started at
21:25:54
UTC
and fired 108 seconds. The
ISS
got 0.22 m / sec. more speed. The actual parameters are 403.2 km x 424.3
km. The
ISS
needs 92.60 minutes for each orbit.

Among the US experiments are:

Studying Our Atmosphere for Thunder and Lightning
The Atmosphere-Space Interactions Monitor (ASIM) will observe Earth
from outside the International Space Station. It will look for severe
thunderstorms, which track upper-atmospheric lightning suggested to
result from run-away electron discharge. This form of lightning occurs
well above normal lightning or storm clouds and observation will tell
scientists more about the role of severe thunderstorms in Earth's
atmosphere and climate.

Testing Microgravity's Impact on Bone Marrow
Scientists believe that microgravity may have a negative impact on bone
marrow and the blood cells it produces. On Earth, long-duration bed rest
can impact patients' bone marrow and something similar may happen in
microgravity. The Bone Marrow Adipose Reaction: Red or White (MARROW)
investigation will measure the extent microgravity's impact on bone
marrow and its blood cells as well as study the recovery process. The
results of this investigation will benefit both health and space
research.

Studying Materials' Reactions to Space
The Materials
ISS
Experiment Flight Facility (MISSE-FF)
will support testing of materials, coatings and components in the harsh
environment of space. This Alpha Space developed platform will be
accessible to the private sector and government organizations and
leverage the low-Earth orbit (LEO) environment to support integrated
testing materials' reaction to ultraviolet radiation (UV), atomic oxygen
(AO), ionizing radiation, ultrahigh vacuum (UHV), charged particles,
thermal cycles, electromagnetic radiation, and micro-meteoroids.

Simulating Gravity aboard the Space Station
Developed by Techshot, the Multi-use Variable-g Platform (MVP) can
simulate up to 2 g of artificial gravity with two internal carousels
that spin simultaneously. MVP will be used aboard the space station to
research a wide variety of sample types, such as fruit flies, flatworms,
plants, fish, cells, protein crystals, and many others.